EP 1043687 A1 20001011 - Method for inserting a watermark and associated decoding method
Title (en)
Method for inserting a watermark and associated decoding method
Title (de)
Verfahren zum Einfügen eines Wasserzeichens und dazugehöriges Dekodierverfahren
Title (fr)
Méthode pour insérer un filigranne et méthode associée de décodage
Publication
Application
Priority
- FR 9904461 A 19990409
- FR 9904462 A 19990409
- FR 9908187 A 19990625
Abstract (en)
A method of determining a partition into distinct regions of a set of coefficients representative of at least a part of an image in order to insert a watermark comprises the following steps: generation (E501) of a centred pseudo-random sequence (w) equal in size to the cardinal number (N) of the said set of coefficients, formed from centred pseudo-random sub-sequences; modulation (E502) of the said set of coefficients by the said centred pseudo-random sequence (w) in order to insert the same information bit on the said set of coefficients; and checking (E504-E508), over each region, of a criterion of detectability of the information bit inserted by modulation. Use especially for determining an adaptative partition as a function of a criterion of detectability of an information bit inserted on each region. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 21/00 (2006.01); B41J 29/00 (2006.01); G06T 1/00 (2006.01); H04N 1/32 (2006.01); H04N 1/387 (2006.01); H04N 7/30 (2006.01)
CPC (source: EP US)
G06T 1/0028 (2013.01 - EP US); H04N 1/32149 (2013.01 - EP US); H04N 1/32165 (2013.01 - EP US); H04N 1/3217 (2013.01 - EP US); H04N 1/32192 (2013.01 - EP US); H04N 1/32203 (2013.01 - EP US); H04N 1/32229 (2013.01 - EP US); G06T 2201/0052 (2013.01 - EP US); G06T 2201/0065 (2013.01 - EP US); H04N 2201/3233 (2013.01 - EP US); H04N 2201/327 (2013.01 - EP US)
Citation (search report)
- [X] MENG AND CHANG: "EMBEDDING VISIBLE VIDEO WATERMARKS IN THE COMPRESSED DOMAIN", INTERNATIONAL CONFERENCE ON IMAGE PROCESSING ICIP98, vol. 1, 4 October 1998 (1998-10-04) - 7 October 1998 (1998-10-07), NEW-YORK NY US, pages 474 - 477, XP002124674
- [X] SWANSON E.A.: "OBJECT-BASED TRANSPARENT VIDEO WATERMARKING", IEEE FIRST WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING, 23 June 1997 (1997-06-23) - 25 June 1997 (1997-06-25), NEW-YORK NY US, pages 369 - 374, XP002124675
- [X] PODILCHUK C I ET AL: "IMAGE-ADAPTIVE WATERMARKING USING VISUAL MODELS", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS,US,IEEE INC. NEW YORK, vol. 16, no. 4, 1 May 1998 (1998-05-01), pages 525 - 539, XP000765113, ISSN: 0733-8716
- [X] TAO B ET AL: "ADAPTIVE WATERMARKING IN THE DCT DOMAIN", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP),US,LOS ALAMITOS,CA: IEEE COMP. SOC. PRESS, 1997, pages 2985 - 2988, XP000788033, ISBN: 0-8186-7920-4
- [X] RUANAIDH J J K O ET AL: "WATERMARKING DIGITAL IMAGES FOR COPYRIGHT PROTECTION", IEE PROCEEDINGS: VISION, IMAGE AND SIGNAL PROCESSING,GB,INSTITUTION OF ELECTRICAL ENGINEERS, vol. 143, no. 4, 1 August 1996 (1996-08-01), pages 250 - 256, XP000613938, ISSN: 1350-245X
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1043687 A1 20001011; EP 1043687 B1 20061122; DE 60031906 D1 20070104; DE 60031906 T2 20070426; JP 2000350014 A 20001215; JP 4208382 B2 20090114; US 7031491 B1 20060418
DOCDB simple family (application)
EP 00400949 A 20000406; DE 60031906 T 20000406; JP 2000106377 A 20000407; US 54415900 A 20000406